30DoSBDW Day 07: If you could have your memory erased of any Doctor Who episode so you could watch it again like it was brand new, which one would it be & why?

You are here because you want to participate in the 30 Days of Summer Break Doctor Who Meme and we are talking to you because you want to participate. When you have finished reading this post, you will have to make a choice, to have your memory erased of just one Doctor Who episode that you loved so much that you can watch it again like it was brand new.

But there are consequences for you all. You must tell us which episode you chose and why. And you must do it by creating a new post to your blog and tagging it 30 Days of Summer Break Doctor Who. May Moffat have mercy on our souls.

Question courtesy of kittieswithpottymouths

art via bwaldorfs